scholarly journals A Group Key Management Scheme for WSN Based on Lagrange Interpolation Polynomial Characteristic

2019 ◽  
Vol 13 (7) ◽  
Keyword(s):  
Key Management ◽  
Lagrange Interpolation ◽  
Interpolation Polynomial ◽  
Group Key Management ◽  
Lagrange Interpolation Polynomial ◽  
Group Key ◽  
Management Scheme ◽  
Key Management Scheme

scholarly journals A WSN Layer-Cluster Key Management Scheme Based on Quadratic Polynomial and Lagrange Interpolation Polynomial

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4388
Author(s):  
Xiaogang Wang ◽  
Zhongfan Yang ◽  
Zhiqiang Feng ◽  
Jun Zhao
Keyword(s):  
Key Management ◽  
Lagrange Interpolation ◽  
Interpolation Polynomial ◽  
Identity Authentication ◽  
Quadratic Polynomial ◽  
Lagrange Interpolation Polynomial ◽  
Session Key ◽  
Group Key ◽  
Management Scheme ◽  
Key Management Scheme

Since current key management schemes are mainly designed for static and planar networks, they are not very suitable for the layer-cluster wireless sensor networks (WSNs), a WSN layer-cluster key management scheme based on quadratic polynomial and Lagrange interpolation polynomial is proposed, in which the main idea of this scheme along the research line of broadcast identity authentication, session key, group key, network key and personal key. Specifically, authentication key can be established on the basis of Fourier series for identity authentication; session key is established by a multiple asymmetric quadratic polynomial, in which session key information is encrypted by the authentication key to ensure the security of intermediate interactive information; based on the former two keys, group key is established on the basis of Lagrange interpolation polynomial, in which the nodes of the cluster are not directly involved; the generation and management of network key is similar to the group key, in which the establishment idea is to regard the BS and all cluster heads as a group; the generation and management of personal key is also similar to the group key, the difference is that the personal key can be obtained by cluster nodes through getting the Lagrange interpolation polynomial coefficients based on their own random key information. It is analyzed that the proposed layer-cluster key management scheme can guarantee the identity of network nodes firstly through forward authentication and reverse authentication, and session key, group key and network key will guarantee the independence of the keys’ management and avoids the problem of single point failure compared with LEAP protocol, and personal key will guarantee the privacy of network.

scholarly journals Group Key Management Scheme for Multicast Communication Fog Computing Networks

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1300
Author(s):  
Mai Trung Dong ◽  
Haitao Xu
Keyword(s):  
Key Management ◽  
Fog Computing ◽  
Threshold Value ◽  
Group Key Management ◽  
Multicast Communication ◽  
Secret Key ◽  
Group Key ◽  
Management Scheme ◽  
Operation Process ◽  
Key Management Scheme

In group key management, the implementation of encryption often fails because multicast communication does not provide reliable linkage. In this paper, a new group key management scheme is proposed for multicast communication in fog computing networks. In the proposed scheme, any legal fog user belonging to a fog node will be able to decrypt a ciphertext encrypted by a secret shared key. The shared secret key is divided into key segments. In the rekeying operation process, each key segment is split into two factors with its shared production mechanism. The key updates are required to belong to the fog provider or the group management device. Fog users will have independent key segments unchanged. Then, the cost, the message of rekeying, and the dependence on credible channels will be decreased. This method can resist collusion attacks and ensure backward security and forward security, even if the number of users leaving is larger than the threshold value. Our scheme is also suitable for untrusted affiliate networks.

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